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SUMMARY:Dust trapping in protoplanetary discs after stellar flybys - Vasu 
 Prasad (IoA Cambridge)
DTSTART:20250821T120000Z
DTEND:20250821T130000Z
UID:TALK235000@talks.cam.ac.uk
CONTACT:Mor Rozner
DESCRIPTION:An open problem in planet formation theory is the growth of du
 st grains from centimetre to metre sizes. The small dust grains in protopl
 anetary discs must be concentrated together in order to grow to planetesi
 mal sizes. We therefore require protoplanetary discs to contain substruct
 ures where dust grains can collide and planetesimal formation can be trigg
 ered. In this talk I will discuss the substructures induced in discs pertu
 rbed by stellar flybys. I will present the results of 3D smoothed particle
  hydrodynamics simulations of discs after a range of flyby encounters and 
 study the dust dynamics in flyby-induced substructures. I will demonstrate
  that the substructures induced by stellar flybys can trap dust for long 
 periods of time and hence induce planetesimal formation.
LOCATION:Institute of Astronomy 
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